84 lines
2.7 KiB
Java
84 lines
2.7 KiB
Java
/*
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* Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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import java.lang.module.ModuleDescriptor;
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import java.lang.module.ModuleFinder;
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import java.lang.module.ModuleReader;
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import java.lang.module.ModuleReference;
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import java.net.URI;
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import java.util.HashMap;
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import java.util.HashSet;
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import java.util.Map;
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import java.util.Objects;
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import java.util.Optional;
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import java.util.Set;
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/**
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* This class consists exclusively of static utility methods that are useful
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* for creating tests for modules.
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*/
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public final class ModuleUtils {
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private ModuleUtils() { }
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/**
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* Returns a ModuleFinder that finds modules with the given module
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* descriptors.
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*/
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static ModuleFinder finderOf(ModuleDescriptor... descriptors) {
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// Create a ModuleReference for each module
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Map<String, ModuleReference> namesToReference = new HashMap<>();
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for (ModuleDescriptor descriptor : descriptors) {
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String name = descriptor.name();
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URI uri = URI.create("module:/" + name);
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ModuleReference mref = new ModuleReference(descriptor, uri) {
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@Override
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public ModuleReader open() {
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throw new UnsupportedOperationException();
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}
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};
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namesToReference.put(name, mref);
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}
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return new ModuleFinder() {
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@Override
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public Optional<ModuleReference> find(String name) {
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Objects.requireNonNull(name);
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return Optional.ofNullable(namesToReference.get(name));
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}
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@Override
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public Set<ModuleReference> findAll() {
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return new HashSet<>(namesToReference.values());
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}
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};
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}
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}
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